Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fe2O3 (iron oxide)-based photocatalysis composite material and preparation method thereof

A composite material, fe2o3 technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., to achieve excellent electronic storage capacity, mild hydrothermal reaction, and excellent photocatalytic performance

Inactive Publication Date: 2018-07-24
苏州宝澜环保科技有限公司
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as we know, there is no report on the use of CQDs aqueous solution to participate in the reaction and post-treatment product design and synthesis of Fe 2 o 3 -CQDs semiconductor composite material and its application in the catalytic degradation of organic dyes under visible light

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fe2O3 (iron oxide)-based photocatalysis composite material and preparation method thereof
  • Fe2O3 (iron oxide)-based photocatalysis composite material and preparation method thereof
  • Fe2O3 (iron oxide)-based photocatalysis composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of Fe 2 O 3 The preparation method of base photocatalytic composite material, the specific steps are as follows:

[0021] (1) The solid-liquid mass ratio of ferric chloride, CQDs aqueous solution, urea and water is 1g:18ml:0.4g:25ml, and the content of the carbon quantum dot aqueous solution is 5mg / ml and mixed evenly;

[0022] (2) Transfer the above solution to a reactor lined with tetrafluoroethylene for hydrothermal reaction. The specific steps of the reaction are heating up to 90°C at 4°C / min, holding for 1.5h, and then rapidly heating up to 260°C at 9°C / min ℃, keep for 50min, and finally cool to room temperature;

[0023] (3) The specific steps for post-processing the product using CQDs aqueous solution are as follows: according to the solid-to-liquid ratio of 1g:10ml, the solid product after the hydrothermal reaction is put into the CQDs aqueous solution with a content of 7mg / ml, and then vigorously stirred at 85°C for 2h .

[0024] (4) Wash the stirred product an...

Embodiment 2

[0033] A kind of Fe 2 O 3 The preparation method of base photocatalytic composite material, the specific steps are as follows:

[0034] (1) The solid-liquid mass ratio of ferric chloride, CQDs aqueous solution, urea and water is 1g:15ml:0.2g:20ml, and the content of the carbon quantum dot aqueous solution is 1mg / ml and mixed uniformly;

[0035] (2) Transfer the above solution to a reactor lined with tetrafluoroethylene for hydrothermal reaction. The specific steps of the reaction are to raise the temperature to 80°C at 3°C / min, keep it for 1 hour, and then quickly raise the temperature to 250°C at 8°C / min , Keep for 40min, and finally cool to room temperature;

[0036] (3) The specific steps of post-processing the product with CQDs aqueous solution are as follows: according to the solid-liquid ratio of 1g:10ml, put the solid product after hydrothermal reaction into the CQDs aqueous solution with a content of 5mg / ml, and then vigorously stir at 80℃ for 1h .

[0037] (4) Wash the stirr...

Embodiment 3

[0043] A kind of Fe 2 O 3 The preparation method of base photocatalytic composite material, the specific steps are as follows:

[0044] (1) The solid-liquid mass ratio of ferric chloride, CQDs aqueous solution, urea, and water is 1g:20ml:0.5g:30ml, and the content of the carbon quantum dot aqueous solution is 10mg / ml and mixed evenly;

[0045] (2) Transfer the above solution to a reactor lined with tetrafluoroethylene for hydrothermal reaction. The specific steps of the reaction are heating up to 100°C at 5°C / min, keeping it for 2h, and then quickly heating up to 270°C at 10°C / min , Keep for 60min, and finally cool to room temperature;

[0046] (3) The specific steps for post-processing the product using CQDs aqueous solution are as follows: according to the solid-liquid ratio of 1g:10ml, the solid product after hydrothermal reaction is put into the CQDs aqueous solution with a content of 10mg / ml, and then vigorously stirred at 90℃ for 3h .

[0047] (4) Wash the stirred product and v...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a Fe2O3 (iron oxide)-based photocatalysis composite material and a preparation method thereof. The Fe2O3-based photocatalysis composite material has the advantages that on the basis of CQDs (carbon quantum dots), the excellent electron storage ability and upconversion fluorescence property are realized, and the water-soluble protection can be formed at the surface of the material; the Fe2O3 has excellent electron transmission property, the product is post-treated by a CQDs water solution, and a stable CQDs protection and fluorescence conversion layer is formed at the surface of the Fe2O3; the current carriers of the composite material are favorably separated and transmitted in the photocatalysis reaction process, the re-compounding rate of the current carriers afterseparation is reduced, and the dye methyl orange is degraded at high efficiency by visible light under the synergistic action; by adopting the progressive heating type, the high-pressure hydrothermalreaction is performed, and the uniformly compounded Fe2O3-CQDs composite material is formed.

Description

Technical field [0001] Inventive Fe 2 O 3 The technical field of preparation of composite materials, especially related to a Fe 2 O 3 -Carbon quantum dots (CQDs) carbon-based semiconductor composite materials and preparation methods thereof. Background technique [0002] Because of its green sustainability, photocatalytic technology has attracted wide attention from scientists in environmental pollution control; however, the large band gap and ultraviolet response of many photocatalytic materials have greatly hindered their development and cannot achieve large-scale development. The purpose of application, therefore, the development of a new type of photocatalyst with high efficiency visible light response has great practical significance. [0003] Carbon quantum dots (CQDs) are a new member of the family of carbon nanomaterials. They have non-toxicity, high fluorescence quantum yield, good biocompatibility, and high light and chemical stability. They can be used for biosensing, bi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745
CPCB01J23/745B01J35/39
Inventor 于香斌
Owner 苏州宝澜环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com